SAFETY VALVE FOR PROTECTING HYDRAULIC MINE PROPS AGAINST OVERLOADS,申请号USD3557826-传众专利搜索

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发明名称	SAFETY VALVE FOR PROTECTING HYDRAULIC MINE PROPS AGAINST OVERLOADS
摘要
申请公布号	US3557826(A)	申请公布日期	1971.01.26
申请号	USD3557826	申请日期	1968.08.26
申请人	HEINZ ALBRECHT	发明人	HEINZ ALBRECHT
分类号	F16K17/02;E21D15/44;F16K17/00;(IPC1-7):E21D15/51;F16K15/02	主分类号	F16K17/02
代理机构		代理人
主权项
地址

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